Ok so about a month ago, I purchased a used Samsung ativ s, I did 3 factory restores on the first day (one to reset, 2 to get the location tracking working), a few minutes ago I installed an app name wnm live . after I launched the app, it auto populated the fields and signed into an account. looking at the info, the account belonged to the previous owner of the phone, his email was filled out and his conversations etc. So my question is how? could this app retain imei's and restore based on the imei? or is there something more to this?